An Unknown Letter of Bishop Walerian Protaszewicz to Pope Gregory XIII from 1576 Concerning the Foundation of the University in Vilnius. Miscellanea Historico-Iuridica, [S. l.], v. 24, n. 2, p. 512–530, 2025. Disponível em: https://miscellanea.uwb.edu.pl/article/view/1690. Acesso em: 11 apr. 2026.